566 
E. EUGGLES GATES AND NESTA THOMAS. 
Lutz, Anne M., 1910, — “A Study of the Chromosomes of CEnotliera 
Lam arckian a, its Mutants and Hybrids,” ‘Proc, Internat. 
Zool. Congress,’ 1907, pp, 352-354. 
1912. — “ Triploid Mutants in CEnotliera,” ‘Biol. Centlbl,,’ xxxii, 
pp. 385-435, figs. 7. 
Stomps, Theo. J., 1912. — “Die Entstehung von CEnotliera gigas de 
Vries,” ‘ Ber. dent. bot. Gesells.,’ xxx, pp. 406-416. 
Wilson, E. B., 1909. — “ Studies on Chromosomes : Y, The Chromosomes 
of Metapodius ; A Contribution to the Hypothesis of the G-enetic 
Continuity of Chromosomes,” ‘ Joiirii. Exp. Zopl,,’ vi, pp. 147- 
205, pi. i, figs. 13. 
1910. — “ Studies on Chromosomes : VI, A new Type of Chromo 
some Combination in Metapodius,” ‘ Journ. Exp. Zool.,’ ix, pp. 
53-78, figs. 5. 
EXPLAXATIOX OF PLATES 35, 36 and 37, 
lilustrating Dr. E. Raggdes Oates and Miss Xesta Thomas’s 
paper on A Cytological Study of CEnotliera mut. lata 
and CE. mat. se mil at a in Relation to Mutation.” 
[All the figures were drawn with the camera liicida. Figs. 1-31, 35- 
54, under a 2 mm, apochr. Horn, iiiim. Zeiss, X.A. 1’40, with comp. oc. 
18 ( X 2900) ; figs. 32-34 under a 3 mm. apochr. Horn. imm. Zeiss, N.A. 
1’40 with comp. oc. 4 (x 500). j 
Figs. 1-7. — CE. semilata, 228 . IV , 17. 
Figs. 8, 9, and 36-41. — CE. biennis lata. 213 . VII . 5. 
Figs. 10 and 11.— CE . lata. 228 . IV . 20. 
Figs. 12 and 13.— CE .lata. 229 .1.4. 
Fig. 14. — CE. semilata. 229 .1.6. 
Figs. 15 and 52. — CE . lata. 142 .1.3, 
Figs. 16 and 17, — CE. rubri calyx. 168 . VII . 1. 
Figs. 18-35. — CE. lata rubricalyx. 60 . I , 20. 
Figs. 42-45. — CE. near Lamarckiana. 142 .1.2. 
Figs. 46-51. — CE. mutant. 229 .1.10. 
Figs. 53, 54. — CE, lata to semilata. 226 . II . 18. 
